.username{
    width: 400px;
    height: 80px;
    border-bottom: 1px solid gainsboro;
    font-size: 20px;
    line-height: 90px;
}
form{
    width: 400px;
}
input{
    border-top: none;
    border-right: none;
    border-left: none;
    border-bottom: 1px solid gainsboro;
    width: 200px;
}
.button{
    margin-left: 20px;
    margin-top: 20px;
    border-radius: 10px;
    background: cadetblue;
}
.imgUpdate{
    position: relative;
    width: 350px;
    float: right;
    margin-top: -268px;
}